JPS6365322A - Equipment and method for weighing - Google Patents

Abstract

PURPOSE:To obtain the titled high-speed and small-sized equipment with high weighing accuracy by partitioning a pool hopper and a weighing hopper into plural chambers respectively to receive and discharge the supply individually and further, providing a memory hopper. CONSTITUTION:An object to be weighed is supplied to each of the memory hoppers 8,...8, each chamber of the weighing hoppers 6 and the pool hoppers 3 and each weighing set. Then, a microcomputer calculates a combination to be made to an approximate value of a set desired weight value in the prescribed order. Then, the hoppers 8,...8 which are made to the objects of the combination open respective discharge plates 10 and supplies the object to be weighed to a next packer according to a requirement signal from the packer. Continuously, the object to be weighed is supplied from each chamber of the hoppers 6 to the empty hoppers 8,...8 and furthermore, from each chamber of the hoppers 3 to each chamber of the hoppers 6 in order. Supply guide plates 5 are inclined to the necessary side so that the object to the weighed is put in the empty side chamber of the hoppers 3 and distribution and supply feeders 4 and vibrated to supply the object to be weighed therein and these are repeated to continue the weighing while the packer is operated.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to a measuring instrument used when a product is packaged into a certain weight unit using a packaging machine and provided to a consumer. Objects to be weighed are randomly supplied to a set target weight value to multiple scales, weighed, and the weight values are combined and calculated in a microcomputer to obtain an approximate weight value that is equal to or as close as possible to the set target weight value. The present invention relates to a combination weighing device used to obtain a combination weighing device and a weighing method used therefor.

[Prior art]

Various products for mass consumption, such as confectionery and food, provided to consumers are packaged in various units to make them easier for consumers to purchase, with some packaging based on number and others based on weight. They are broadly divided into 2 types, but all of them are designed with consideration to the price that consumers can easily afford. Among them, weight-based items are subject to the Measurement Act regulations, and require measurement using a measuring instrument, so it is difficult to measure with a single measuring instrument. 10 to 14 units depending on the method of weighing to the set target weight value
A weighing device consisting of a set of weighing machines is prepared, and the product, that is, the object to be weighed, is dividedly fed and weighed, and the weight values obtained for each weighing device are combined and calculated by a microcomputer. The combination weighing method that obtains an approximate weight value that is difficult to be the same as the set target weight value, but is extremely close to the set target weight value, is the set target weight value that is performed on the scale when weighing with a method that obtains the set target weight value with one weighing instrument. In the final stage when the weight is close to 1, it is difficult to feed a small amount, but the set target weight value is randomly divided and fed to each weighing device as appropriate.As it is a combination of several, it is possible to adjust by feeding a small amount. is unnecessary, and even if the time required for weighing does not change, the time to feed the objects to be weighed to the weighing instruments is faster, and once each weighing instrument has finished weighing, the combination calculations are performed at high speed by the microcomputer as mentioned above, and the total weight is measured. As it is faster and more accurate, measuring instruments are starting to change to this combination weighing method.

[Problems with conventional technology]

As mentioned above, the combination weighing method has high weighing accuracy and fast weighing speed, which is effective in improving production yield and increasing productivity, but the times are demanding even higher weighing precision and faster speeds. In addition, because there are many scales for combination weighing, the combination weighing device itself becomes large, and when installing it, a mount with sufficient strength is provided on top of the packaging machine to prevent errors due to vibrations during operation of the packaging machine and combination weighing device. The weighing machine is installed on top of the weighing machine to supply the weighed items to the packaging machine, and there is a need to further reduce the size and weight of the weighing machine and realize a weighing and packaging machine that is integrated with the packaging machine.

This type of weighing instrument combines the objects to be weighed before the weighing process, and when designing the weighing instrument, we also conduct simulations by generating random numbers with a microphone and a computer. The number of target weight values is determined logically and the weight is supplied to each weighing device so that the weight approximately corresponds to that weight.The conventional general combination weighing device has one pool hopper and one weighing hopper 11iI as one weighing set. This is used as a combination weighing device for 10 series and 1 for 14 series, and each unit supplies one combined approximate weight value each time to a single-fold packaging machine that has 1115 packaging functions. In addition, in order to increase the capacity, 14 series of combination weighing devices are used for twin-type packaging machines in which each packaging machine has a packaging function of 2 @ each time, and the combined approximate weight value of 2 items is calculated each time. The mainstream is to have a set of weighing sets arranged around a predetermined number of circles, and the object to be weighed is fed to the center of the set, using a distributed feeder for each weighing set. First, it is supplied to a pool hopper, which is then supplied to a weighing hobper installed at the bottom of the pool hopper.

Although care has been taken to ensure that the objects to be weighed supplied to the weighing hoppers have weight values within the range described above, each weighing hopper is characterized by the fact that completely random items are immediately weighed. , for example, if the number of weight values to be combined is 5, the total number of combinations is 2'=32.
In WA, it is difficult to obtain a weight value that approximates the set target weight value even if the combination calculation is performed to this extent.

Also, if it is 20 fvA, this total number of combinations = 1.
048,576, which increases exponentially and increases the probability of obtaining an approximate weight value that is infinitely close to the set target weight value. The weight of the weighing device will also increase, and there will be restrictions on the angle at which it can slide down the collection chute used to discharge the object to be weighed from the handheld scale and send it to the next process, and the height of the weighing device will also have to be high. This goes against the trend of miniaturization, and even if the number of combinations increases, it may take more time to calculate the combinations, so in rare cases, the number of combined weight values is 16@ and the external size of the device is 2 meters. There are some that exceed 1°, but as mentioned above, usually 1° or 14 animals are prepared.
One set out of D total combinations 2■ = 1024, and 1
Combination weighing devices of the type that take out 40 to 60 sets of approximate weight values per minute from a total of 4 combinations 2" = 10384 are the mainstream, but recently the number of weight values to be combined has been further increased. In addition, in order to avoid complicating the weighing device, the weighing hopper does not have a weighing detection mechanism at the bottom, and the objects to be weighed in the weighing method are supplied from the weighing hopper of the same series, and the weight value becomes the combination target. When this happens, a memory hopper is installed in the collection chute at the bottom that can be discharged.
One weighing set includes one pool hopper, one weighing hopper, and one memory hopper, and a single-type packaging machine has 7 series, and a twin-type packaging machine has 14 series each for single-type packaging. A combination weighing device that increases the number of weight values to be combined with a twin-type packaging machine of 14 degrees and a twin-type packaging machine of 28@ is also available, with one combination weighing device having a pool hopper weighing 8fL and a memory hopper weighing 1 par 8 fish, and a memory hopper weighing 16 tons. Efforts have been made to improve the weighing accuracy and weighing speed so that it can be used with single-type or twin-type packaging machines, but in practice there are still many problems to be solved, including miniaturization.

Furthermore, a problem with this food weighing device is that the approximate weight value for the set target value is not constant as the number of combined target weight values that are added to the combination to obtain that weight value varies depending on the allowance. In actual practice, at least 10
Agony is used and the total number of combinations is 2" = 102411i
4, there are many methods of determining the approximate weight value of IM from among these combinations.

In this case, the initial value is 10, and the combination calculation is performed each time.The objects to be measured that are the targets of combination are discharged to be sent to the next process, and each time they are replenished and weighed, and the next combination calculation is performed. As mentioned earlier, if the initial value of the number of weight values to be combined is 14 animals, the number of combinations will be 2" = 16384111, and it is not practical to perform combination calculations for all numbers from the viewpoint of weighing efficiency, so single type packaging is used. In this case, the calculation is stopped mid-way rather than all the calculations, and an approximate value weight value is obtained.In twin-type packaging machines, the combination calculation is usually performed twice with 10@ before the first time, and one set of approximations is calculated. Calculate the weight value, then perform the combination calculation again by adding the weight value that did not participate in that combination and the weight value that was not used the first time, and calculate one more set of approximate weight values from this. This is done because it is faster than calculating all combinations - although it has advantages and disadvantages, if the number of weights used in the first combination is 4 or less, the remaining weight value number is 61m or more and it is used for the first time. If you count the 4 that did not, the second time you will perform the same combination calculation as the first time with 10 pieces, and from this, one set of approximate weight values will be found.
The number of target weight values used for the first time is 5@ or 6@
If so, the remaining number is 5 or 4 pieces, and even if you add the 4 pieces that are the number of unused weight values for the first time, the total number of combinations is 2' = 512
11J or 2s = 256, so we can no longer expect accuracy, and efforts have been made to reduce the number to 4 or less using the combinatorial calculation software, but this is a problem that cannot be ignored.

[Purpose of the invention]

The purpose of the present invention is to solve the problems of the conventional combination weighing device, and to create a system in which the object to be weighed, which is supplied to the top of the scale, is fed to a weighing hopper via a distributed feeder, a pool hopper, and then weighed. Without changing the basics, even if the memory hopper is placed, the weight values to be combined can be increased without increasing its outer diameter too much, and this allows the weight values to be combined to be divided into several groups. It is possible to perform combination calculations at the same time or by shifting the time and overlapping multiple combination calculations without making the operation of each part particularly complicated.Weighing accuracy is high and high speed. , which attempts to provide a small-sized measuring device and a measuring method.

[Structure of the invention]

In line with the above-mentioned purpose, this invention is constructed as follows:
The objects to be weighed that are fed to the top of the weighing device are first fed to pool hoppers arranged vertically on the circumference, then fed to the next weighing hopper and then weighed, and the weight values are combined. A combination calculation is performed as the target measured value, or a combination calculation is performed using the measured value supplied to a memory hopper provided at the bottom.

This pool hopper and weighing hopper are divided into at least two or more chambers, although problems may occur if they are divided into too many sections due to their structure and function, and each chamber can be individually supplied with objects to be weighed from the top. The structure shall be such that they can be discharged individually.

Therefore, in order to supply individual supplies from the distributed feeder to each partitioned room of the pool hopper, it is necessary to have multiple distributed feeders depending on the number of partitioned pool hoppers, or to install a supply guide plate and change its inclination angle. The supply from the pool hopper to the weighing hopper is achieved by placing each weighing hopper chamber at the bottom of each chamber of the pool hopper.Even if the weighing hopper is divided into multiple chambers, one load cell It is equipped with a weight detection mechanism, but there are 2 compartments.
Whether it is a single room or three rooms, the pool hopper always supplies each room individually, making it possible to know the weight of each room individually. For the object to be weighed, the sum of the number of partitioned chambers of the weighing hopper and the number of series is the number of weight values to be combined, and the conditions for the combination calculation are as many as 9.

In addition, a memory hopper is installed at the bottom of the hopper, and even if the supply continues, the weight value of each memory hopper can also be calculated for each chamber of the weighing hopper by utilizing the memory of a microcomputer that performs calculations by combining the operations and order of each part. It is also possible to understand the same and use it as a combined weight value,
It is also possible to increase the number of memory hoppers and perform the combination calculation using only the memory hoppers, or to make each chamber of both the weighing hopper and the memory hopper participate in the combination calculation.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

First Embodiment FIG. 1 is a plan view of a first embodiment in which 12 series of weighing sets of the present invention are used, and FIG. 2 shows the configuration of the weighing set with two pool hoppers, two weighing hoppers, and two memory hoppers. A perspective explanatory diagram of a weighing set composed of individual pieces, one series,
FIG. 4 is an explanatory diagram of the total number of weight values to be combined in this first embodiment.

In the combination method using the combination weighing device based on the first embodiment, the object to be weighed is first placed on the dispersion table 1.
The weight is supplied to the pool hopper 3, which is disposed and held on the outer periphery of a drive unit 2 that opens and closes the discharge plate of each hopper, by a distributed feeder 4, and the weight is approximately approximated with variation.

At this time, since the pool hopper 3 is divided into two chambers, it is necessary to feed selectively to either side rather than at the same time, so two distributed feeders 4 are prepared for each weighing set, and each is vibrated separately. Another method is to divide the trough of the distributed feeder 4 into two parts and set separate gates at the tips of the trough, and even if the distributed feeder 4 is vibrated, only the one that opens the gate is fed. Although it may take a long time, in this example, the distributed supply feeder 4 and the pool hopper 3
A supply guide plate 5 is installed between the pool hopper 30 by tilting it to the required side using a drive device (not shown) and sliding down the top surface of the pool hopper 30, first to an outside room, and then to another outside room. The supply guide plate 5 is turned to the opposite side and the object to be weighed is supplied at an angle.

The object to be weighed supplied to each chamber of the pool hopper 3 is immediately supplied to the corresponding chamber of the weighing hopper 6 disposed below it even if it is empty. That is, only one chamber is supplied with the pool hopper discharge plate 7 on that side opened and weighed, and only after this is completed is the next chamber supplied and weighed. This allows the weight detection mechanism S (usually a load cell is used Since there is only one weighing machine (often), the first measurement is the weight of the object to be weighed in the first chamber, and the second measurement is the total weight of this and the object to be weighed in the next chamber. The difference between this value and the second weighing value is the weight value of the second chamber, and it is possible to perform a combination calculation using this as the weight value to be combined, but in this method, the weight value to be combined in this example is The number is 2 pieces x 12 weighing sets) =
2411ffi, and the total number of weight value combinations when feeding to one packaging machine is 2" = 16777216, which tends to be too many, so divide it into groups of about 107 to 12 and sequentially perform combination calculations and discharge the combinations. The next process is immediately supplied and weighed to prepare for the next combination calculation, and the combinations that are not included in the combination are taken into the next group and combination measurement is continued.The total number of combinations is 2!4! If there is a number that can accommodate a twin-type packaging machine, it is also possible to divide 21 into two groups and have each one independently share the packaging function of the two sets of twin-type packaging machines for weighing and packaging. In the example, since the method further uses a memory hopper 8.8, the weighed objects in each chamber of the weighing hopper 6 that have been weighed are transferred to the weighing hopper 6 immediately if the memory hopper 8.8 located below is empty. The objects to be weighed in each chamber are fed by opening the weighing hopper 6 discharge plate 9. Through this operation, the weight of the objects fed to each memory hopper 8.8 is also fed and calculated. As the weight of the object to be weighed in the chamber moves, the weight value is shifted and stored in a microcomputer (not shown).

In this way, objects to be weighed are supplied to each memory hopper 8.8, each chamber of the weighing hopper 6, and further to each chamber of the pool hopper 3, and all 12 weighing sets in this embodiment, and are ready for weighing. is completed, the microcomputer performs the combination calculation according to a predetermined procedure and calculates a combination weight value that is an approximate value of the set target weight value, and the memory hopper 8, which is the target of the combination,... 8 opens each memory hopper discharge plate 10 and supplies the object to be weighed in response to a request signal for the object to be weighed from the next process, for example, a packaging machine, and the empty memory hopper 8, . . .
. . 8, the object to be weighed is immediately supplied from each chamber of the weighing hopper 6 above K, and then the weighing hopper 6 is sequentially supplied from each chamber of the pool hopper 3. Tilt the supply guide plate 5 to the required side into the empty side chamber, vibrate the distributed supply feeder 4 to supply the object to be weighed, and repeat these operations in sequence to continue weighing while the packaging machine is operating. do.

Figure 4 is an explanatory diagram of the total number of weight values that are subject to the combination of methods in Figure 2. Weighing hopper Memory hopper w1-! , %-...-W goose-catcher-1 catch--batch 3-field, 1,) to 4.1 ・1 axis N■1.1 lump -1Δ flea, 1... ν43.1 Combination target
(Not used) If there are 24 or more combinations, the total number of combinations becomes 234 as described above, and a combination calculation is performed to obtain an approximate value of the set target weight value from among them.

Second Embodiment FIG. 3 is a perspective explanatory diagram of one series of a weighing set based on the second embodiment of the present invention, and FIG. 5 is an explanatory diagram of the total number of weight values to be combined in this second embodiment. be.

In the second embodiment, as shown in FIG.
This is a perspective view showing one series of the weighing set of the combination weighing device which is divided into two chambers and has three memory hoppers 8 as in the embodiment.Individual operations are performed according to the first embodiment, and the assembly with this configuration is shown. The number of weight values to be combined is as shown in Figure 5, and the weighing set is 12 series, weighing hopper memory hopper world -1%...
..."N-*-凰-1凰-...
,) to t-J...A to ζS-J8 (41, laziness, M
,,...-...Number of combinations of 8 to snow (not used) 36 or more streets, total number of combinations is 23
It becomes @, and it takes time to perform this combination operation on all the numbers, and it is not necessary, but the fact that there are many combinations makes it possible to perform combination calculations by dividing the number of combinations into several groups, so it is highly accurate.
It has the advantage of high-speed calculation.

Third Embodiment Figure 6 shows the configuration of the weighing set for each series: two pool hoppers 3, three weighing hoppers 6, and a memory hopper 8.
This is an explanatory diagram of the combination weighing device with 2@ closed. All objects to be weighed that are supplied to the memory hopper 8 and whose weight values are known can be made to participate in the combination calculation, but the W of the weighing hopper 6
l is only for supplying to M, , M, in memory hopper 8, and chapter W supplies the object to be weighed from now on when M, is empty, but when it is not necessary, it can participate in the combinatorial operation and perform the weighing of Wl. Since objects to be weighed that have already been weighed can unconditionally participate in the combination calculation, the number of weight values to be combined according to the third embodiment is as follows when the weighing set is 12 series: Weighing hopper Memory hopper lol! ,%4・
・-W,,, Fla, M-...Koichi Kakushige,
Title: Irregular laziness 4 凰-1 凰・・・・・・Activity! -Number of combinations: 24 There are 24, so the total number is 48@, and the total number of combinations is 2, which makes it possible to perform combination calculations on even more groups.However, this is only possible when W-will cannot participate numerically. It will be less by that amount.

4th Embodiment FIG. 7 shows the configuration of the weighing set for each series: two pool hoppers 3, two weighing hoppers 6, and a memory hopper 8.
This is an explanatory diagram of a combination weighing device in which the memory hopper 8 is divided into two chambers.
．． 1@ is divided into two chambers, and each chamber is supplied with weighed objects from the weighing hopper to the corresponding chamber to participate in the combination calculation. A weighing hopper discharge plate 9 is provided bidirectionally in each chamber so that the weighed object can be discharged directly to the collecting chute 11 without being sent to the memory hopper 8. As a result, each chamber of the weighing hopper 6 and the memory hopper = 8 All weighed objects are supplied to each chamber, and the weighing set is a 12-series combination weighing device as in the other embodiments, and the number of weight values to be combined is the same as the weighing hopper, memory hopper).
to ζ ~1,) to (4,1...unique to A 4.1
凰 -1Δ--...1st grade 4I -Kiichi, Kai-
.....4 customers - 1 凰 .....3 - number of combinations 24 @ 24 fish, so the total number is 48 @, and the total number of combinations is 2.

However, similarly to the third embodiment, for each weighing set of the same series, both or one of the memory hoppers 8 is subjected to the combination calculation and discharges the weighed material, and when the weighing hopper is empty, the weighing hopper returns to its chamber. Since priority is given to replenishing , the number of participating weight values of the combination may be multiplied by that amount.

5th Embodiment FIG. 8 shows a method of increasing the number of weight values to be combined as described in the first to fourth embodiments by adding a pool hottuno (-3), a weighing hopper 6, and a memory hopper -8 as well. This is done by partitioning and increasing the number of sentences, and the weight value of the heavy items to be weighed to be combined is determined by weighing hopper 6.
It is supplied to each divided room, weighed, and supplied to each memory hole/%-8, and a combination calculation is performed.

This makes it possible to have a large initial number of combinations, so the combination calculation software by the microcomputer gives top priority and maximizes the replenishment of the objects to be weighed that are to be combined and are discharged. Avoid selecting multiple circles from the same series of each weighing set at the same time, and minimize the number of weight values to be combined at one time, and combine evenly from all the hoppers that can participate in the combination. Consider making the program conditional so that it will be selected.

19^- The accuracy of measurements performed repeatedly in this way is related to microcomputers that are becoming increasingly faster and more multifunctional, and to improvements in algorithms for combinational calculation methods. The number of target weight values is increased from the above 10 combinations of 2゛0 to 11 for 2゛, and then 12@ for 2゛ and more combinations to meet the above combination conditions. High precision can be achieved by performing close combination calculations, and the weighing speed depends on the physical properties of the object to be weighed, such as its shape and bulk specific gravity, and the mechanical parts involved in feeding and discharging the object to each hopper. The operating time and the time required to wait for the weight detection mechanism S to stabilize due to the shock generated when the objects to be weighed are supplied to each chamber of the weighing hopper 6 are considered to be the rate-limiting factors when increasing the weighing speed, and this improvement is necessary. Become.

In the fifth embodiment, in order to improve this, the complexity of the structure can be minimized by standardizing and commonizing each part of the device, sharing electrical parts, time-sharing control, etc., and eliminating the disadvantages by increasing the accuracy and speed of weighing. If priority is to be given, the weight detection mechanism S is also provided in the pool hopper 6, and the objects to be weighed that are supplied to the pool hopper 6 first are immediately transferred to that weighing hopper when a vacant space occurs in the weighing hopper 6 due to continued weighing operation. 6 vacancies will be supplied.

At this time, the pool hopper 3 is always replenished as soon as one of the chambers becomes empty, and there is a waiting time for the next supply, that is, a time for the weight detection mechanism S to stabilize and accurately detect the weight. Sometimes, the total value can be calculated.Next, when the outer chamber of the weighing hopper 6 becomes empty, if the object is fed from the outer chamber of the corresponding pool hopper 3 and weighed, the object to be weighed will be immediately placed in the pool hopper 3. Even if the weight is supplied, the weight value obtained by subtracting the current weighing value in the weighing hopper 6 from the original total value is the remaining weight value, and if the total value is obtained, the weight value of the remaining objects to be weighed. The difference between the total value and the total value is determined as the weight value of the new replenishment supply.

Therefore, if the weight of both chambers of the pool hopper 6 is known, for example, if the memory hopper 8 is configured with two chambers and they are to be combined at the same time, the weighing hopper 6
This one-type memory hopper with weight detection mechanism S also contributes to faster weighing.

Furthermore, in the combination weighing method shown in the fourth embodiment, the memory hopper 8 is also equipped with a weight detection mechanism S, so that the pool hopper 3, weighing hopper 6, and memory hopper 8 can detect the weight of each chamber of the object to be weighed. In this way, when the Wl of the weighing hopper 6 and the sail of the memory hopper 8 on the same side are combined at the same time, the weight of the object to be weighed in the pool hopper 6 is being fed or has been fed, but the weight is not the same. Even if the detection of the weight value is not completed while waiting for the detection mechanism to stabilize, the object to be weighed is immediately fed to the supplementary memory hopper 8 by passing through the Wl of the weighing hopper 6, and weighed in the memory hopper 8. This is an example in which the emphasis is placed on increasing the number of weight values to be combined as much as possible by having the subjects participate in combined weighing, and on quickly replenishing the discharged objects to be weighed.

〔Effect of the invention〕

As described above, according to the combination device and weighing method based on the present invention, one conventional pool hopper and 11 weighing hoppers are used.
iin is used as one weighing set, or a memory hopper is added to make one weighing set.Without changing the basics of the combination weighing device, which was made up of multiple of these, the pool hopper can be divided into multiple chambers. The weighing hopper is also divided into multiple chambers and the objects to be weighed are fed to each chamber individually according to a predetermined procedure. If necessary, the number of weight values to be combined can be greatly increased by attaching a weight detection mechanism to the pool hopper or both the pool hopper and the weighing hopper, and set target weight values. In the combination calculation to obtain the approximate weight of Prepare a group of
If the weight values to be combined at that time are determined in the process of the combination calculation, they are replenished, and even if the weighing is not completed, the weight value of the next object to be weighed is replenished to the hopper. Weight values that are known to be combined are considered to be the heavy weight values to be combined, and weight values that are not included in the combination of that time are sequentially forwarded and added to a new combination group, so that there is sufficient time for each combination. There is also the effect of being able to calculate the weight value of the combination target even if the number of combinations is large each time. Easily implement conditional combination calculation methods such as reducing the number of hoppers and using each hopper evenly instead of intensively so that the number discharged to the next process does not exceed the number of newly supplied weighed items. It is possible to obtain a weight approximate to the set target weight value with high precision and high speed, and it also has the effect of preventing partial mechanical wear of the combination weighing device and increasing its durability.

In addition, in the present invention, when the weight value of the outer chamber of each hopper is known when weighing the object to be weighed, when the object to be weighed is subsequently supplied to the next chamber and weighed, the total value is detected. It is calculated by subtracting the weight of the object to be weighed that was previously supplied from the value, and sometimes the object to be weighed is supplied to the firebox even though the weight value of the outer chamber has not been measured yet, giving priority to the supply. Even if the total weight value is detected, if the object to be weighed is discharged and supplied only to the outer chamber to the next hopper within the range that does not touch the conditions of the combination calculation, the difference between the original total weight value and the remaining weight value After grasping the weight value and supplying and discharging the object to be weighed to each hopper, you do not have to wait for the weight detection mechanism to stabilize before weighing, but if the weight value is known, combine both before feeding it to the next hopper. It also has the effect of increasing weight.

In addition, when performing high-speed weighing, the number of combinations of objects to be weighed that are supplied to and discharged from the next process can be adjusted to compensate for the weak point that weighing efficiency gradually decreases due to delays in replenishment, even if the initial value is large. In addition to guaranteeing high performance by operating this combination weighing device within the limits of physical properties such as
For a combination weighing device whose basic configuration is one weighing set, if the arrangement is on the circumference, the radius will be larger by one room of the partitioned hopper, but the ratio of the length and width is determined by the physical property of the object to be weighed. In order to minimize the size of the weighing device as a whole, we reduced the overall size of the weighing device by increasing the degree of integration of the machines and mechanisms in each part of the drive unit that operates each discharge plate. The machine volume is much smaller than the conventional type, it maintains high weighing accuracy, it can perform many weighings per hour, and it is also possible to put into practical use a combination weighing device that can be mounted directly on the packaging machine. It also has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a partial perspective view of the first embodiment, FIG. 3 is a partial perspective view of the second embodiment, and FIG. 4 is a partial perspective view of the first embodiment. FIG. 5 is an explanatory diagram of the number of weight values to be combined in the second embodiment, FIG. 6 is in the third embodiment, and FIG. 7 is in the fourth embodiment. FIG. 8 is a partial sectional view showing the main parts of the fifth embodiment.

Claims (9)

[Claims] (1) A weighing set consisting of a weighing hopper divided into at least two chambers, attached to a weight detection mechanism, and a pool hopper arranged above that has the function of supplying objects to be weighed individually to each chamber of the divided weighing hopper. A combination weighing device characterized in that a plurality of series are provided, and the weight values of objects to be weighed whose weights are detected by supplying them to each chamber of a weighing hopper are combined to calculate a combination of approximate weights for a set target weight value. (2) Weighing hopper divided into multiple rooms, one in each room in turn.
The objects to be weighed are supplied to each room, weighed each time, the weight values for each chamber are stored individually, and the combination calculation is performed. 1 weighing hopper with a mechanism that can discharge even minutes or multiple chambers.
2. The combination weighing device according to claim 1, wherein the combination weighing device is mounted on a weight detection mechanism of a table. (3) A pool hopper that supplies objects to be weighed to each chamber of a weighing hopper divided into multiple chambers is divided into sections corresponding to each chamber of the weighing hopper, and supplies objects to be weighed individually to the divided pool hopper. 2. The combination weighing device according to claim 1, wherein the weighing device is configured to supply the objects to be weighed and to discharge the objects to be weighed individually from the corresponding weighing hoppers. (4) A memory hopper is provided at the bottom of the weighing hopper, which is divided into multiple chambers, and a memory hopper is provided at the bottom to supply and hold the objects whose weight values have been measured in each chamber, and the weight values are used as the combined weight values to perform combination calculations. A combination weighing device featuring: (5) The weighing hopper divided into multiple chambers has two bidirectional discharge plates, and when one side is opened and closed, supply can be supplied to the memory hopper at the bottom, and when the other side is opened and closed, it can be discharged directly to the collection chute at the bottom. A combination weighing device characterized in that the weight value of each arranged memory hopper and the weight value of each chamber of the weighing hopper are combined as a weight value to be combined. (6) In a combination weighing device that performs a combination calculation to obtain an approximate weight value for a set target weight value using a plurality of weight values to be combined stored in a memory hopper, objects to be weighed from the memory hopper to be combined are used. is discharged and then the next combination calculation is performed in anticipation of the next supply even if there is no supply of the object to be weighed from the weighing hopper whose weight value has been measured. Combination weighing method. (7) Claims 1 and 4 characterized in that a weighing hopper divided into a plurality of chambers is arranged on the circumference, and each divided chamber is arranged sequentially from the center direction to the outer circumferential direction.
Combination weighing device as described in section. (8) The pool hopper, which is divided into multiple chambers and supplies objects to be weighed to a weighing hopper equipped with a weight detection mechanism, is equipped with a weight detection mechanism in the same way as the weighing hopper, and the objects to be weighed are measured using this. 2. The combination weighing device according to claim 1, wherein the weight value of is also used as the weight value to be combined. (9) A pool hopper that is partitioned and equipped with a weight detection mechanism, and a memory hopper that receives objects to be weighed from the weighing hopper are equipped with a weight detection mechanism to detect the weight of the objects to be weighed, and then combine the target weight values. A combination weighing device according to claims 1 and 4, characterized in that the combination weighing device can be